In the Paris sewers, Judex and a young Maigret battle the Frankenstein Monster. Meanwhile in Tibet, Alexander Whateley's plans to bring about the return of Yog-Sothoth are thwarted by the combined efforts of JimGrim and Robur the Conqueror. C. Auguste Dupin tackles the Black Coats with the help of Count of Monte-Cristo, and the mysterious Doctor Omega with that of Sergeant Picard. In Surrey, a young Harry Dickson teams up with the Sâr Dubnotal to expose the Werewolf of Rutherford Grange, while in the North Atlantic, Allan Quatermain and She encounter Dracula on a doomed ship. Arsène Lupin meets Lord Dunsany at a soirée and crosses path with the Phantom of the Opera in the Caracombs of Montpellier. Twenty years later, Doc Ardan has a rematch with the diabolical Doctor Natas and, in the far future, Fantômas lives again!